Not sure which graphics card to get to boost my fps in games.

[Lukeeey16]

My specs:
AMD A8 3870K 3.0GHz Quad Core Accelerated Processing Unit
Corsair CMV8GX3M2A1333C9 Desktop Memory 8GB Kit 1333MHz C9 DDR3
Gigabyte A75M-D2H Socket FM1 Motherboard
1TB CCL Choice SATA III Hard Drive
Sapphire AMD Radeon HD 6570 2GB Graphics Card
LiteOn IHAS124-19 24x DVDRW
Xigmatek Asgard ATX Mid Tower Case
XFX Pro 450W Power Supply Unit (Core Edition)
TP-Link 300Mbps Wireless N USB Adapter TL-WN821N

I recently bought black ops 2 and I am experiencing fps drops when I shoot, zoom in ect...
my friend has told me to upgrade my graphics card to this : http://www.amazon.co.uk/Asus-Nvidia-GeForce-Graphics-Express/dp/B0087YADCG/ref=sr_1_11?s=computers&ie=UTF8&qid=1357326406&sr=1-11

After researching for a while I found mixed reviews about it and I am unsure whether to purchase it. Can anyone help me and suggest their opinions on whether I should get it or not. If not please will you link one that is £70-£200 that will definitely boost my fps in games
Thanks

 

[Earthfall5]

£70-£200 is a big range. Of course anything closer to £200 will be better. If you want to stay with Sapphire, you could get a Radeon 7870 for under £200. I personally went for the Gigabyte version for it's cooling ability. Hitting 60 fps on most games maxed out at 1080p, but with AA turned down or off.

http://www.amazon.co.uk/Gigabyte-Radeon-Graphics-GDDR5-PCI-E/dp/B007LB3UIU/ref=sr_1_2?s=computers&ie=UTF8&qid=1357524226&sr=1-2

 

[Lukeeey16]

£70-£200 is a big range. Of course anything closer to £200 will be better. If you want to stay with Sapphire, you could get a Radeon 7870 for under £200. I personally went for the Gigabyte version for it's cooling ability. Hitting 60 fps on most games maxed out at 1080p, but with AA turned down or off.

http://www.amazon.co.uk/Gigabyte-Radeon-Graphics-GDDR5-PCI-E/dp/B007LB3UIU/ref=sr_1_2?s=computers&ie=UTF8&qid=1357524226&sr=1-2

Just found this graphics card: http://www.amazon.co.uk/dp/B0099AOD50/ref=asc_df_B0099AOD5011356297?smid=A3P5ROKL5A1OLE&tag=googlecouk06-21&linkCode=asn&creative=22206&creativeASIN=B0099AOD50

is that better than the one you posted? Also I do have £200 but I was looking for one which was around the 100-150 mark as I want to buy a couple of games. But I guess buying a £200 would provide for the future games.

 

[Earthfall5]

The 7870 is a little bit better than a 660, but close enough so if you prefer Nvidia, it would do the trick just as well. You could also drop down to a 7850 to save some money.

 

[Lukeeey16]

The 7870 is a little bit better than a 660, but close enough so if you prefer Nvidia, it would do the trick just as well. You could also drop down to a 7850 to save some money.

Thanks for replying just one more thing. I checked on a website and It said that the graphics card you put up use 170 something watts my psu is only 450w and I'm guessing other parts of my psu use that power so would I need to upgrade my psu or not and also is it compatible with my motherboard.